Figure 1. Galaxy J101652.52, left: original image; right: fitted by galactic spiral equation from ROTASE model with ρ = 2.5, and the Euler (-14,15,0)

From

How Long Can the Spiral Arms of Disc Galaxies Be Optically Observed?

Hongjun Pan

International Journal of Physics. 2024, 12(5), 212-224 doi:10.12691/ijp-12-5-4